WAC 480-120-256
WAC 480-120-256. Caller identification service
The company that provides caller identification service must provide its retail customers the capability of blocking the delivery of their numbers, names, or locations both on a per call basis and on a per line basis. The company must not charge a monthly fee or per call fee for caller identification blocking. The company must not charge a nonrecurring fee for caller identification blocking:
(1) When the service is requested at the time an access line is connected;
(2) The first time the service is added to an access line; or
(3) The first time the service is removed from an access line.